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Application filed by Ivanov Genadij M, Burysek Frantisek, Zdenek Silar, Frantisek Ing HorlikfiledCriticalIvanov Genadij M
Priority to CS867822ApriorityCriticalpatent/CS256813B1/en
Priority to SU877774542Aprioritypatent/SU1691436A1/en
Publication of CS782286A1publicationCriticalpatent/CS782286A1/en
Publication of CS256813B1publicationCriticalpatent/CS256813B1/en